Solar energy heat utilization system combining thermal diode and phase change energy-storage material

Abstract

The present invention provides a solar energy heat utilizing system combining thermal diode and phase-change energy-storing materials, it is characterized by it combines the thermal diode technology and the phase-change energy-storing technology, at the same time utilizes them in solar energy heat utilization to provide life hot water for people. When solar radiation is absorbed by heat-collecting sheet, the temperature of heat-collecting sheet one side is increased swiftly, the temperature of phase-change materials in heat-storing device is relative lower, so the solar energy heat quantity is transmitted into heat-storing device through thermal diode to make phase-change materials absorb heat and unfreeze and store heat quantity; when life hot water is needed, tap water flows over the heat transferring coil pipe in phase-change materials, and absorbs heat quantity for warming-up. The system has simple structure, it is easy to be combined with buildings, due to the utilization of thermal diode technology and the phase-change energy-storing technology, the heat-collecting performance and thermal insulation performance of the system are improved greatly. Compared with all-glass vacuum tube solar water heating system, the system has characteristics of no freezing, bearing more, fast start, high sensitivity and fast heat transfer speed.

Description

technical field [0001] The invention relates to a solar water heating system, in particular to a solar water heating system using a solar thermal diode as a heat transfer component and a phase change energy storage material as a heat storage medium. Background technique [0002] Existing solar water heating systems generally have a type of all-glass vacuum tube circulating water heater in addition to the sun-drying type. It integrates storage and storage, but because it cannot perform effective heat exchange cycle, its thermal efficiency is low. In addition, it cannot prevent the problem of reverse circulation of hot water inside the water heater after the heat collecting surface dissipates heat at night or when there is no sunlight. The vacuum tubes of the existing all-glass vacuum tube solar heat collectors have the disadvantages of being fragile, unable to bear the pressure in the tap water pipeline system, easy to explode the tubes when using hot water, and easy to free...

AI Technical Summary

Problems solved by technology

[0002] Existing solar water heating systems generally have a type of all-glass vacuum tube circulating water heater in addition to the sun-drying type. Integration of storage and storage, but due to the inability to perform effective heat exchange cycles, the thermal efficiency is low

In addition, it cannot prevent the problem of reverse circulation of hot water inside the water heater after the heat collecting surface dissipates heat at night or when there is no sunlight.

The vacuum tubes of the existing all-glass vacuum tube solar collectors have the disadvantages of being fragile, unable to withstand the pressure in the tap water pipeline system, easy to explode the tubes when using hot water, and easy to freeze the tubes in cold winter

In addition, scaling on the inner wall of the glass tube will reduce the heat collection efficiency, and the vacuum tube cannot be made into the overall structure of the building plate and combined with the building

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